Attention is drawn to the Notes following the titles of class B81 an subclass B81B relating to "microstructural devices" and microstructural systems"

This subclass covers (in groups H01H 69/00 - H01H 87/00) devices for the protection of electric lines or electric machines or apparatus in the event of undesired change from normal electric working conditions, the electrical condition serving directly as the input to the device.

This subclass does not cover bases, casings, or covers accommodating two or more switching devices or for accommodating a switching device as well as another electric component, e.g. bus-bar, line connector. Those bases, casings or covers are covered by group H02B 1/26.

In this subclass, the following terms or expressions are used with the meanings indicated :

"relay" means a switching device having contacts which are operated from electric inputs which supply, directly or indirectly, all the mechanical energy necessary to cause both the closure and the opening of the contacts;

"driving mechanism" refers to the means by which an operating force applied to the switch is transmitted to the moving contact or contacts;

"operating" is used in a broader sense than "actuating" which is reserved for those parts not touched by hand to effect switching;

"acting" or "action" means a self-induced movement of parts at one stage of the switching.

These connotations apply to all parts of the verbs "to operate", "to actuate" and "to act" and to words derived therefrom, e.g. to "actuation".

In this subclass, details are classified as follows :

details of an unspecified type of switching device, or disclosed as applicable to two or more kinds of switching devices designated by the terms or expressions "switches", "relays", "selector switches", and "emergency protective devices", are classified in groups H01H 1/00 - H01H 9/00;

details of an unspecified type of relay, or disclosed as applicable to two or more types of relays as defined by groups H01H 51/00 - H01H 61/00, hereinafter called basic types are classified in H01H 45/00;

details of an unspecified protective device, or applicable to two or more types of protective devices as defined by groups H01H 73/00 - H01H 83/00, hereinafter called basic types, are classified in H01H 71/00.

However, details only described with reference to, or clearly only applicable to, switching devices of a single basic type, are classified in the group appropriate to switching devices of that basic type, e.g. H01H 19/02, H01H 75/04;

mechanical structural details of control members of switches or of keyboards such as keys, push-buttons, levers or other mechanisms for transferring the force to the activated elements are classified in this subclass, even when they are used for controlling electronic switches.

However, mechanical details directly producing electronic effects are classified in group H03K 17/94.

WARNINGS

The following IPC groups are not in the CPC scheme. The subject matter for these IPC groups is classified in the following CPC groups:

adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift [2013-01]

{making use of cooperating spring loaded wedging or camming parts between operating member and contact structure} [2013-01]

H01H 5/06

. .

by compression or extension of coil springs [2013-01]

H01H 5/08

. . .

one end of spring transmitting movement to the contact member when the other end is moved by the operating part [2013-01]

H01H 5/10

. . .

one end of spring being fixedly connected to the stationary or movable part of the switch and the other end reacting with a movable or stationary rigid member respectively through pins, cams, toothed or other shaped surfaces [2013-01]

H01H 5/12

. . .

having two or more snap-action motions in succession [2013-01]

H01H 5/14

. .

by twisting of torsion members [2013-01]

H01H 5/16

. . .

with auxiliary means for temporarily holding parts until torsion member is sufficiently strained [2013-01]

H01H 5/18

. .

by flexing of blade springs [2013-01]

H01H 5/20

. . .

single blade moved across dead-centre position [2013-01]

H01H 5/22

. . .

blade spring with at least one snap-acting leg and at least one separate contact-carrying or contact-actuating leg [2013-01]

H01H 5/24

. . . .

having three legs [2013-01]

H01H 5/26

. . .

having two or more snap-action motions in succession [2013-01]

H01H 5/28

. . .

two separate blade springs forming a toggle [2013-01]

H01H 5/30

. .

by buckling of disc springs [2013-01]

H01H 7/00

Devices for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts (time or time-programme switches H01H 43/00) [2013-01]

Interlocking, locking, or latching mechanisms (contacts adapted to act as latches H01H 1/52; by an auxiliary movement of the operating part or of an attachment thereto H01H 3/20; {for withdrawable switchgear H02B 11/00}) [2013-01]

{the casing containing electrical equipment other than and operated by the switch} [2013-01]

H01H 9/24

. .

for interlocking two or more parts of the mechanism for operating contacts [2013-01]

H01H 9/26

. .

for interlocking two or more switches ({H01H 13/568 takes precedence}; by a detachable member H01H 9/28{; for electromagnetic relays H01H 50/323}) [2017-08]

H01H 9/262

. . .

{using flexible transmission elements, e.g. Bowden cable} [2013-01]

H01H 2009/265

. . .

{with interlocking of more than two switches} [2013-01]

H01H 2009/267

. . .

{with interlocking of two out of three switches, e.g. two switches each connecting a power supply to a busbar and a bus coupling switch interlocked in such a way that the power supplies are never connected in parallel} [2013-01]

H01H 9/28

. .

for locking switch parts by a key or equivalent removable member (switches operated by a key H01H 27/00; locking by removable part of two-part coupling device H01R) [2013-01]

{comprising a parallel semiconductor switch being fired optically, e.g. using a photocoupler,} [2013-01]

H01H 2009/546

. . . .

{the static switching means being triggered by the voltage over the mechanical switch contacts} [2013-01]

H01H 9/547

. .

{Combinations of mechanical switches and static switches, the latter being controlled by the former} [2013-01]

H01H 9/548

. .

{Electromechanical and static switch connected in series} [2013-01]

H01H 9/56

. .

for ensuring the operation of the switch at a predetermined point in the cycle [2013-01]

H01H 9/563

. . .

{for multipolar switches, e.g. different timing for different phases, selecting phase with first zero-crossing} [2013-01]

H01H 2009/566

. . .

{with self learning, e.g. measured delay is used in later actuations} [2013-01]

H01H 11/00

Apparatus or processes specially adapted for manufacture of electric switches (processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards, H01H 13/88; processes or apparatus specially adapted for the manufacture or treatment of microstructural devices or systems, e.g. in combination with electrical devices, B81C) [2017-08]

{by deforming, e.g. bending, folding or caulking, part of the contact or terminal which is being mounted} [2013-01]

H01H 13/00

Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch (wherein the operating part is flexible H01H 17/00) [2013-01]

{Casings hermetically closed by a diaphragm through which passes an actuating member (vacuum switches H01H 33/66)} [2013-01]

H01H 2013/066

. . . .

{using bellows} [2013-01]

H01H 13/08

. . .

Casing of switch constituted by a handle serving a purpose other than the actuation of the switch [2013-01]

H01H 13/10

. .

Bases; Stationary contacts mounted thereon [2013-01]

H01H 13/12

. .

Movable parts; Contacts mounted thereon [2013-01]

H01H 13/14

. . .

Operating parts, e.g. push-button [2013-01]

H01H 13/16

. . . .

adapted for operation by a part of the human body other than the hand, e.g. by foot [2013-01]

H01H 13/18

. . . .

adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift [2013-01]

one end of spring transmitting movement to the contact member when the other end is moved by the operating part [2013-01]

H01H 13/32

. . . .

one end of spring being fixedly connected to the stationary or movable part of the switch and the other end reacting with a movable or stationary member respectively through pins, cams, toothed or other shaped surfaces [2013-01]

with contact-driving member rotated step-wise in one direction [2013-01]

H01H 13/585

. . . .

{wherein the movable contact rotates around the axis of the push button} [2013-01]

H01H 13/60

. . .

with contact-driving member moved alternately in opposite directions [2013-01]

H01H 13/62

. .

the contact returning to its original state upon manual release of a latch (latch released by second push-button H01H 13/68) [2013-01]

H01H 13/64

. .

wherein the switch has more than two electrically distinguishable positions, e.g. multi-position push-button switches [2013-01]

H01H 13/66

. . .

the operating member having only two positions [2013-01]

H01H 13/68

.

having two operating members, one for opening and one for closing the same set of contacts (single operating member protruding from different sides of switch casing for alternate pushing upon opposite ends H01H 15/22) [2013-01]

adapted for operation by a part of the human body other than the hand, e.g. by foot [2013-01]

H01H 15/14

. . . .

adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift [2013-01]

H01H 15/16

. . .

Driving mechanisms [2013-01]

H01H 15/18

. . . .

acting with snap action [2013-01]

H01H 15/20

. . . .

with means for introducing a predetermined time delay [2013-01]

H01H 15/22

.

having a single operating part protruding from different sides of switch casing for alternate actuation from opposite ends [2013-01]

H01H 15/24

.

having a single operating part only protruding from one side of the switch casing for alternate pushing and pulling [2013-01]

adapted for operation by a part of the human body other than the hand, e.g. by foot [2013-01]

H01H 17/12

. . . .

adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift [2013-01]

H01H 17/14

. .

Guiding means for flexible operating part [2013-01]

H01H 17/16

.

having a single flexible operating part adapted for pulling at one end only [2013-01]

H01H 17/165

. .

{secured to a part of the switch mechanism that has only rectilinear movement} [2013-01]

H01H 17/18

. .

secured to part of the switch driving mechanism that has only angular movement [2013-01]

H01H 17/20

. . .

the contact returning to its original state immediately upon removal of operating force [2013-01]

H01H 17/22

. . .

the contact returning to its original state upon the next application of operating force [2013-01]

H01H 17/24

. .

secured to a part of the switch driving mechanism that has both angular and rectilinear motion [2013-01]

H01H 17/26

.

having two flexible operating parts; having a single operating part adapted for pulling at both ends [2013-01]

H01H 17/28

. .

secured to part or parts of the switch driving mechanism having only rectilinear motion [2013-01]

H01H 17/30

. .

secured to a part or parts of the switch driving mechanism having only angular motion [2013-01]

H01H 19/00

Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid external to the switch, e.g. by a hand (rotary current collectors, distributors or interrupters H01R 39/00) [2013-01]

adapted for operation by a part of the human body other than the hand, e.g. by foot [2013-01]

H01H 19/18

. . . .

adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift [2013-01]

H01H 19/183

. . . . .

{adapted for operation by the simultaneous action of two cam plates, rotating at different speeds} [2013-01]

H01H 19/186

. . . . .

{with travelling nuts} [2013-01]

H01H 19/20

. . .

Driving mechanisms allowing angular displacement of the operating part to be effective in either direction [2013-01]

H01H 19/22

. . . .

incorporating lost motion [2013-01]

H01H 19/24

. . . .

acting with snap action [2013-01]

H01H 19/26

. . . .

with means for introducing a predetermined time delay [2013-01]

H01H 19/28

. . .

Driving mechanisms allowing angular displacement of the operating part to be effective or possible in only one direction [2013-01]

H01H 19/30

. . . .

incorporating lost motion [2013-01]

H01H 19/32

. . . .

acting with snap action [2013-01]

H01H 19/34

. . . .

with means for introducing a predetermined time delay [2013-01]

H01H 19/36

.

the operating part having only two operative positions, e.g. relatively displaced by 180 degrees [2013-01]

H01H 19/38

. .

Change-over switches [2013-01]

H01H 19/40

. . .

having only axial contact pressure [2013-01]

H01H 19/42

. .

providing more than two electrically different conditions, e.g. for closing either or both of two circuits [2013-01]

H01H 19/44

. . .

having only axial contact pressure [2013-01]

H01H 19/46

.

the operating part having three operative positions, e.g. off/star/delta [2013-01]

H01H 19/48

. .

having only axial contact pressure [2013-01]

H01H 19/50

.

the operating part having four operative positions, e.g. off/two-in-series/one-only/two-in-parallel [2013-01]

H01H 19/52

. .

having only axial contact pressure [2013-01]

H01H 19/54

.

the operating part having at least five or an unspecified number of operative positions [2013-01]

Contacts actuated by rectilinearly-movable member linked to operating part, e.g. by pin and slot [2013-01]

H01H 19/6355

. . . .

{using axial cam devices for transforming the angular movement into linear movement along the axis of rotation} [2013-01]

H01H 19/64

.

Encased switches adapted for ganged operation when assembled in a line with identical switches, e.g. stacked switches [2013-01]

H01H 21/00

Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand (tumbler or rocker switches H01H 23/00; switches having an operating part movable angularly in more than one plane H01H 25/04) [2013-01]

{with push-pull operation, e.g. which can be pivoted in both directions by pushing or pulling on the same extremity of the operating member} [2013-01]

H01H 21/24

. . . .

biased to return to normal position upon removal of operating force [2013-01]

H01H 21/245

. . . . .

{the contact returning to its original state upon the next application of operating force} [2013-01]

H01H 21/26

. . . . .

adapted for operation by a part of the human body other than the hand, e.g. by foot [2013-01]

H01H 21/28

. . . . .

adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift [2013-01]

{having an operating arm actuated by the movement of the body and mounted on an axis converting its rotating movement into a rectilinear switch activating movement} [2013-01]

H01H 2021/287

. . . . . .

{with adjustable head, e.g. the actuator head can have different positions in relation to the limit switch itself} [2013-01]

H01H 21/30

. . . .

not biased to return to a normal position upon removal of operating force [2013-01]

H01H 21/32

. . . . .

adapted for operation by a part of the human body other than the hand, e.g. by foot [2013-01]

H01H 21/34

. . . . .

adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift [2013-01]

H01H 21/36

. . .

Driving mechanisms [2013-01]

H01H 21/38

. . . .

incorporating lost motion [2013-01]

H01H 21/40

. . . .

having snap action [2013-01]

H01H 21/42

. . . . .

produced by compression or extension of coil spring [2013-01]

H01H 21/44

. . . . .

produced by flexing blade springs [2013-01]

H01H 21/46

. . . . .

with two or more snap-action motions in succession [2013-01]

H01H 21/48

. . . .

incorporating a ratchet mechanism [2013-01]

H01H 21/50

. . . .

with indexing or latching means, e.g. indexing by ball and spring; with means to ensure stopping at intermediate operative positions [2013-01]

H01H 21/52

. . . .

with means for introducing a predetermined time delay [2013-01]

H01H 21/54

.

Lever switches with blade-type contact co-operating with one or two spring-clip contacts, e.g. knife switch [2013-01]

Key inserted and then turned to effect operation of the switch {(IC integrated in key and connected by turning key E05B 49/004)} [2013-01]

H01H 27/063

. .

{wherein the switch cannot be moved to a third position, e.g. start position, unless the preceding movement was from a first position to a second position, e.g. ignition position (starting of engines and safety devices F02N 11/00; safety means for electric spark ignition F02P 11/00)} [2013-01]

Operating mechanisms adapted for operation by a part of the human body other than the hand, e.g. by foot [2013-01]

H01H 29/14

. .

Operating mechanisms adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift [2013-01]

wherein contact is made and broken between liquid and liquid [2013-01]

H01H 29/26

.

with level of surface of contact liquid displaced by centrifugal action [2013-01]

H01H 29/28

.

with level of surface of contact liquid displaced by fluid pressure [2013-01]

H01H 29/30

.

with level of surface of contact liquid displaced by expansion or evaporation thereof [2013-01]

H01H 29/32

.

with contact made by a liquid jet, e.g. earthing switch with contact made by jet of water (operated by direct electrodynamic action H01H 53/00) [2013-01]

H01H 31/00

Air-break switches for high tension without arc-extinguishing or arc-preventing means (in combination with high tension or heavy-current switches with arc-extinguishing or arc-preventing means H01H 33/00; switching arrangements for the supply or distribution of electric power H02B) [2013-01]

{Use of solid insulating compounds resistant to the contacting fluid dielectrics and their decomposition products, e.g. to SF6(insulators or insulating bodies characterised by the insulating materials, selection of materials for their insulating or dielectric properties per seH01B 3/00)} [2013-01]

this movement being effected solely due to the pressure caused by the arc itself or by an auxiliary arc {(H01H 33/903 takes precedence)} [2013-01]

H01H 33/95

. . . .

the arc-extinguishing fluid being air or gas [2013-01]

H01H 33/96

. . . .

the arc-extinguishing fluid being liquid, e.g. oil [2013-01]

H01H 33/98

. .

the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow {(H01H 33/901 takes precedence)} [2013-01]

H01H 33/982

. . .

{in which the pressure-generating arc is rotated by a magnetic field} [2013-01]

A switching device is classified according to that physical condition which, when changed, acts as input to the device, e.g. external explosion causing pressure wave to act upon switch is classified in group H01H 35/24, an explosion produced within the switch in group H01H 37/00 if initiated by heat, in group H01H 39/00 if initiated electrically, and in group H01H 35/14 if initiated by an external blow.

Switches operated by change of position, inclination or orientation of the switch itself in relation to gravitational field (tilting mercury container H01H 29/20; change of position due to change of liquid level H01H 35/18; {specially adapted for electromechanical clocks or watches G04C 3/002}) [2013-01]

Switches operated by change of liquid level or of liquid density, e.g. float switch (wherein the liquid constitutes a contact of the switch H01H 29/00; by magnet carried on a float H01H 36/02) [2013-01]

H01H 35/183

. .

{making use of a thermal switch} [2013-01]

H01H 35/186

. .

{making use of a cable suspended floater containing an inclination sensing switch} [2013-01]

H01H 35/24

.

Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow (wherein the change of pressure is caused by change of temperature H01H 37/36) [2013-01]

H01H 35/242

. .

{operated by one particular pressure-time function} [2013-01]

H01H 35/245

. .

{actuated by the deformation of a body of elastic material} [2013-01]

H01H 35/247

. .

{the switch being of the reed switch type} [2013-01]

H01H 35/26

. .

Details [2013-01]

H01H 35/2607

. . .

{Means for adjustment of "ON" or "OFF" operating pressure (means for adjustment of "ON" or "OFF" operating temperature of thermally actuated switches by varying bias on the thermal element due to a separate spring H01H 37/18)} [2013-01]

H01H 35/2614

. . . .

{by varying the bias on the pressure sensitive element} [2013-01]

H01H 35/2621

. . . . .

{the bias being magnetic} [2013-01]

H01H 35/2628

. . . .

{by varying the relative position of switch-casing and pressure sensitive element} [2013-01]

H01H 35/2635

. . . .

{by adjustment of a motion transmitting system} [2013-01]

H01H 35/2642

. . . . .

{comprising a lost-motion connection} [2013-01]

H01H 35/265

. . . .

{by adjustment of one of the co-operating contacts} [2013-01]

H01H 35/2657

. . .

{with different switches operated at substantially different pressures} [2013-01]

H01H 35/2664

. . . .

{making use of a balance plate pivoting about different axes} [2013-01]

H01H 35/2671

. . .

{Means to detect leaks in the pressure sensitive element} [2013-01]

H01H 35/2678

. . .

{Means to isolate oscillating component of pressure} [2013-01]

H01H 35/2685

. . .

{Means to protect pressure sensitive element against over pressure} [2013-01]

H01H 35/2692

. . .

{comprising pneumatic snap-action} [2013-01]

H01H 35/28

. . .

Compensation for variation of ambient pressure or temperature [2013-01]

Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding {(specially adapted for electromechanical clocks or watches G04C 3/004)} [2013-01]

{wherein the switch cannot be closed when the temperature is above a certain value} [2013-01]

H01H 37/72

.

Switches in which the opening movement and the closing movement of a contact are effected respectively by heating and cooling or vice versa [2013-01]

H01H 37/74

.

Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling (for the electrical protection of electric lines or electric apparatus H01H 73/00 - H01H 83/00) [2016-05]

H01H 37/76

. .

Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material (fuses H01H 85/00) [2013-01]

{using a spring for opening the circuit when the fusible element melts} [2013-01]

H01H 2037/763

. . . . .

{the spring being a blade spring} [2013-01]

H01H 37/764

. . .

{in which contacts are held closed by a thermal pellet} [2013-01]

H01H 37/765

. . . .

{using a sliding contact between a metallic cylindrical housing and a central electrode} [2013-01]

H01H 37/766

. . . .

{using a bridging contact} [2013-01]

H01H 37/767

. . .

{Normally open} [2013-01]

H01H 2037/768

. . .

{characterised by the composition of the fusible material} [2013-01]

H01H 2037/769

. . .

{characterised by the composition of insulating fusible materials, e.g. for use in the thermal pellets} [2013-01]

H01H 39/00

Switching devices actuated by an explosion produced within the device and initiated by an electric current [2013-01]

H01H 39/002

.

{provided with a cartridge-magazine} [2013-01]

H01H 39/004

.

{Closing switches} [2013-01]

H01H 39/006

.

{Opening by severing a conductor} [2013-01]

H01H 2039/008

.

{using the switch for a battery cutoff} [2013-01]

H01H 41/00

Switches providing a selected number of consecutive operations of the contacts by a single manual actuation of the operating part (for telephone communication H04M 1/26) [2013-01]

H01H 41/04

.

Switches without means for setting or mechanically storing a multidigit number [2013-01]

H01H 41/06

. .

dial or slide operated [2013-01]

H01H 41/08

. .

keyboard operated [2013-01]

H01H 41/10

.

Switches with means for setting or mechanically storing a multidigit number [2013-01]

H01H 41/12

. .

dial or slide operated [2013-01]

H01H 41/14

. .

keyboard operated [2013-01]

H01H 43/00

Time or time-programme switches providing a choice of time intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed (clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals G04C 23/00; {apparatus which can be set and started to measure-off predetermined intervals G04F 3/06}; programme-control systems G05B 19/00) [2013-01]

H01H 43/005

.

{with timing of the actuation of contacts due to a part rotating at variable speed} [2013-01]

Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current (circuit arrangements for electro-magnets in general H01F 7/18) [2013-01]

Mechanical means for producing a desired natural frequency of operation of the contacts, e.g. for self-interrupter [2013-01]

H01H 50/76

. . .

using reed or blade spring [2013-01]

H01H 50/78

. . .

using diaphragm; using stretched wire or ribbon vibrating sideways [2013-01]

H01H 50/80

. . .

using torsionally-vibrating member, e.g. wire, strip [2013-01]

H01H 50/82

. . .

using spring-loaded pivoted inertia member [2013-01]

H01H 50/84

. . .

with means for adjustment of frequency or of make-to-break ratio [2013-01]

H01H 50/86

.

Means for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts (circuit arrangements for introducing delay H01H 47/18; short-circuited conducting sleeves, bands, or discs H01H 50/46) [2013-01]

Relays in which the armature is maintained in one position by a permanent magnet and freed by energisation of a coil producing an opposing magnetic field {(H01H 51/02 - H01H 51/26 take precedence)} [2016-05]

H01H 51/02

.

Non-polarised relays [2013-01]

H01H 51/04

. .

with single armature; with single set of ganged armatures [2013-01]

H01H 51/06

. . .

Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity {(motors with armature moved one way and returned by spring in general H02K 33/02)} [2013-01]

H01H 51/065

. . . .

{Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles (details H01H 50/20)} [2013-01]

H01H 51/08

. . . .

Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet [2013-01]

H01H 51/082

. . . . .

{using rotating ratchet mechanism} [2013-01]

H01H 51/084

. . . . . .

{with axial ratchet elements} [2013-01]

H01H 51/086

. . . . . .

{with radial ratchet elements} [2013-01]

H01H 51/088

. . . . . . .

{moved alternately in opposite directions} [2013-01]

H01H 51/10

. . . .

Contacts retained open or closed by a latch which is controlled by an electromagnet [2013-01]

H01H 51/12

. . .

Armature is movable between two limit positions of rest and is moved in both directions due to the energisation of one or the other of two electromagnets without the storage of energy to effect the return movement {(motors with armature moved one way and returned by spring in general H02K 33/02)} [2013-01]

H01H 51/14

. . . .

without intermediate neutral position of rest [2013-01]

H01H 51/16

. . . .

with intermediate neutral position of rest [2013-01]

H01H 51/18

. . .

Armature is rotatable through an unlimited number of revolutions [2013-01]

{in which the movable part comprises at least one permanent magnet, sandwiched between pole-plates, each forming an active air-gap with parts of the stationary magnetic circuit (H01H 51/2209 takes precedence)} [2013-01]

Relays with armature having two stable magnetic states and operated by change from one state to the other [2013-01]

H01H 51/28

.

Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed (H01H 51/27 takes precedence) [2013-01]

H01H 51/281

. .

{Mounting of the relay; Encapsulating; Details of connections} [2013-01]

Self-interrupters, i.e. with periodic or other repetitive opening and closing of contacts [2013-01]

H01H 51/36

. .

wherein the make-to-break ratio is varied by hand setting or current strength [2013-01]

H01H 53/00

Relays using the dynamo-electric effect, i.e. relays in which contacts are opened or closed due to relative movement of current-carrying conductor and magnetic field caused by force of interaction between them [2013-01]

{with at least one of juxtaposed casings dedicated to an auxiliary device, e.g. for undervoltage or shunt trip} [2013-01]

H01H 2071/0285

. . . .

{Provisions for an intermediate device between two adjacent circuit breakers having the same general contour but an auxiliary function, e.g. cooling, isolation, wire guiding, magnetic isolation or screening} [2013-01]